Goodlite G-20230 F32T8/835/ECO Straight 32 Watt 48-Inch Inch 800 Series T8 Fluorescent Tube Light Bulb, 30 Pack G13 Medium Bipin, 48" long, Good Efficiency 75% less energy than incandescent, 3500 Lumens More than 100++ lumens/watt (efficacy) Bulb Meets Federal Minimum efficiency Standards Brand Cross Reference F32T8/835/ECO -F32T8/SPX35/ECO - F32T8/TL835/ALTO - FO32/835/ECO - F32T8/XL/SPX35/ECO - F32T8/TL835 PLUS/ALTO -FO32/835/XP/ECO CRI 85 800 series high quality triphosphor coding Energy efficient, an environmentally responsible lamp low mercury meets TCLP requirements Works with INSTANT / RAPID Start Fixtures, Long Life: 25,000 hour ,Bulbs sleeved safe wile shipping